James neil



JAMES NEIL, OF LONDON, ENGLAND.

FunNAcE-c.RATE.l

SPECIFICATION forming part of Letters Patent No. 616,133,

dated December 20, 1898.

Application filed January 28, 1897. Serial No. 621,040. (N0 model.)

To @ZZ whom it may concern:

Be it known that I, JAMES NEIL, a citizen of the Dominion of Canada,residing at London, in the county of Middlesex, England, have inventedcertain new and useful `Improvements in Furnace-Grates, of which thefollowing is afull and complete speciiication, such as will enable thoseskilled in the art to which it appertains to make and use the same.

This invention consists of an improvement in rocking and dumping grates,and the object thereof is to provide-improved grate-bars for grates ofthis class so as to secure better combustion and a greater steamingefficiency for boilers.

The invention is fully disclosed in the following specification, ofwhich the accompanying drawings form a part, in which the separate partsof my improvement are designated by the same letters of reference ineach of the views, and in which- Figure lis a plan view of a part of adouble grate constructed according to my invention; Fig. 2, a section onthe line 2 2 of FigA l; Fig. 3, a transverse section on the line 3 3 ofFig. 2, and Fig. 4 a transverse section of my improved grate-bar.

In the drawings forming part of this speciiication, reference being madeto Figs. l and 2, I have shown two of my improved gratebars as employedin a double grate, and in the practice of my invention I provide agrate-bar which consists of two central vertical longitudinal webs A,two vertical side longitudinal webs a, and transverse webs a2, by whichthe central longitudinal and side longitudinal webs are connected. Asshown in Fig. l, the transverse webs a2 are arranged at a slightinclination to the longitudinal vertical webs;

4o but this arrangement is not essential and may or may not be employed,and as thus constructed my improved grate-bar resembles in cross-sectionthe form of a barrel, the central longitudinal webs A being much widerthan the side longitudinal webs a and the transverse Webs d2 beingelliptical in form. The

'side longitudinal webs d are provided on their outer surfaces withvertical ribs or projections as, and the lower' edges of said sidelongitudinal webs a are preferably provided with downwardly-directednotches or recesses d4. The central longitudinal webs A are alsoconnected by transverse webs d5, any desired number of which may beemployed, and the inner walls of the said central longitudinal webs Aare corrugated or fluted, as shown at d6. The objectin thus forming thegrate-bars is to provide perfect means for ventilation and for the freecirculation of the air through and around the separate parts thereof andalso to avoid the use of too much material, and the lower edges of theside longitudinal webs d need not necessarily be projected be low theedges of the transverse webs d2, as shown in Figs. 3 and 4.

In Figs. l, 2, and 3 I have also shown improved devices for supportingthe grate-bars when said grate-bars are used in a double grate. Thesedevices consist of parallel side bars B, which are supported in anydesired manner, and the outer ends of the grate-bars are provided withtrunnions b, which pass through said side bars and are revolubletherein. The inner ends of said grate-bars are supported by horizontalparallel central bars D, which are connected by cross-rods d, andmounted in circular notches or recesses formed in the upper sides of thebars D are spindles d2. The spindles d2 are provided centrally withdisks or plates d3, which are secured thereto and which are adapted toturn between the bars D, andthe ends of the spindles d2 are providedwith downwardly-directed projections d4, which are beveled on theirinner edges, as shown at d5, and are also provided with transversenotches or recesses d6, as shown in Fig. 3. The said spindles d2 arealso provided on their upper sides and at their ends withupwardly-directed lugs or projections CF, and the inner ends of thegratebars are provided with vertical notches or recesses d8, which opendownwardly, as shown in Fig. 3, and at the upper sides thereof withtransverse slots or openings di), which correspond with the lugs orprojections d'7. In connecting the inner ends of the grate-bars with thespindles cl2 the ends of said spindles, which are angular in form, asshown in Fig.

3, are passed into the angular notches or recesses d8 in the ends IOOsaid grate-bars are compelled to turn with said spindles, and by turningone of said bars the corresponding spindle and the other bar will alsobe caused to turn, as will be readily understood.

The grate-bars may be turned or dumped by applying a crank, crank-lever,or other device to the outer ends of said bars in the usual manner, andany preferred means may be employed for this purpose.

I have not shown my improved grate-bar as applied to a single grate; butit will be understood that when my improved bar is thus used both endsthereof will be provided with trunnions l) in the usual manner, and saidgrate-bars may be turned or dumped, as hereinbeiore described.

The central longitudinal webs A may also be grooved or corrugated ontheir outer surfaces, and the side longitudinal webs a may be grooved orcorrugated on their inner snrfaces, and other changes in andmodiiications of the construction herein described may be made withoutdeparting from the spirit of my invention or sacrificing its advantages.

The object of forming the vertical ribs or projections aion the outersides of the longitudinal side webs a and the notches or recesses a4 inthe lower edges thereof and also in corrugating or iiuting the centrallongitudinal ribs A is also to assist in breaking up the clinkers, andthus facilitating the dumping of the bars and the passage of the ashes,clinkers, and other material therethrough, in addition to assisting inthe ventilation thereof, and the disk or plate d3, secured to thespindle d, serves to clean the space between the central parallelsupporting-bars D when the grate-bars are turned, and it will thus beseen that I accomplish the object of my invention by means of a devicewhich is simple in construction and operation and which is alsocomparatively inexpensive.

I-Iaving fully described my invention, I claim as new and desire tosecure by Letters Patent l. A dumping-grate, consisting of two sets ofgrate-bars, the outer ends of which are revolubl y supported in parallelside bars, and the inner ends of which are supported in parallel centralbars, said parallel central bars being provided with a revoluble spindlewith which the inner ends of the grate-bars are detachably connected,and said spindle being provided with a disk or plate which is mountedthereon,centrally thereof, and which is adapted to turn between saidparallel central bars, substantially as shown and described.

2. A dumping-grate, comprising two parl allel side bars or supports, twocentral parallel side bars or supports, a spindle mounted in saidcentral side bars or supports, and revoluble therein, and grate-bars,the outer ends of which are revolubly mounted in the side bars orsupports, and the inner ends of which are detachably connected with, andrevoluble with said spindle, said spindle being also provided centrallywith a disk or plate which is adapted to turn between said centralsupporting-bars,` substantially as shown and described.

In testimony that I claim the foregoing as myinvention I have signed myname, in presence of theV subscribing witnesses, this 7th day ofJanuary, 1897.

JAMES NEIL.

.Witnesses JAs. ALEXANDER, JAS. CAMPBELL.

